Data From NPS Question isn't Passing to Survey Responses

Hello,

Today I've been testing getting NPS data from a 2 question survey into a contact record.  Around test #32, the NPS question stopped passing data to survey responses. The comments pass with no problem. The NPS doesn't show in Forms Pro under View Responses or in the survey responses entity. However, the data from both questions is captured in question responses so NPS did get picked up somewhere.  I tried switching email addresses -- same result.

Any idea why this happened? How do I fix this?

Thanks,

Elizabeth